feat(portal/routes): redirect /admin to axiom

Author: MFarabi619

apps/portal/app/routes/admin.tsx

@@ -0,0 +1,12 @@
+/* eslint-disable node/prefer-global/process */
+import type { LoaderFunction } from '@remix-run/node'
+import { redirect } from '@remix-run/node'
+
+export const loader: LoaderFunction = async () => {
+  const adminURL
+    = process.env.NODE_ENV === 'development'
+      ? `${process.env.CUHACKING_2025_AXIOM_LOCAL_URL}/admin`
+      : `${process.env.CUHACKING_2025_AXIOM_PUBLIC_URL}/admin`
+
+  return redirect(adminURL)
+}